Lock mechanism



Aug. 6, 1929. THOMAS 1,723,665

LOCK MECHANI SM Filed Dec. 14, 1927 2 Sheets-Sheet 1 IHVENTOR ATTO R HEYS.

Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

ARTHUR E. THOMAS, OF WAYNE, MICHIGAN.

LOCK MECHANISM.

Application filed December 14, 1927.

My invention relates to improvements in look mechanism.

An object is to provide simple, positively acting, easily operable lockmechanism of strong sturdy construction wherein the lock bolt isreciprocated over a substantial distance from a retracted to a projectedposition.

A further object is to provide such a lock of the dead bolt type whereinthe bolt is cored out to provide longitudinally extending,perpendicularly intersecting guideways, through one of which guideways apair or operating spindles extend, each spindle being provided with acam roll supported for rotation through the other guideway, one rolloperable to reciprocate the bolt and the other operable to lock the boltagainst reciprocation, one cam roll being lrey controlled and the othernot.

Other meritorious features and advantages of my improved lock mechanismwill more fully appear from the following specification, appended claimsand accompanying draw ings, wherein- Fig. 1 is a side elevation of myimproved lock structure with a portion of the casing removed, the boltbeing in the projected position.

Fig. 2 is aside elevation of the structure shown in Fig. 1, the boltbeing in the retracted position. a

Fig. 3 is a vertical sectional view taken on line 3-3 of Fig. 1. a I

Fig. 4 is a horizontal sectional view taken on line l l of Fig. 3.

Fig. 5 is an elevation of one edge of the latch bolt.

Fig. 6 is an elevation of the opposite edge of the latch bolt.

Fig. 7 is a fragmentary elevation of a portion of the casing taken onthe line 7-7 of Fig. 3.

Figs. 8 and 9 are elevations of two cam rolls.

I provide a lock bolt casing which comprises a box-shaped portion 10 anda cover 12 secured thereto by bolts or otherwise. The portion 10 isshown in Figs. 1 and 2 with the lock bolt mechanism disposed therein andapertures 14 are illustrated through which bolts may be passed to securethe lid 12 there over. A look bolt 16 is slidably supported within thecasing being entirely received within portion 10 of the casing. Thislock bolt is here shown as formed of two pieces, 16 and 16 securedtogether by rivets 17, or in some other suitable manner. The lock SerialNo. 239,864.

bolt may be fitted with a ring 18 which can be attached by a suitableconnection to a remote part to actuate the same. The bolt is cored outlongitudinally to provide a guideway 20 shown in Figs. 5 and 6, and asecond guid'cway 22 shown in Figs. 1 and 2. These guideways 20 and 22intersect each other substantially perpendicularly. (iruideway 22 ascompared with the guideway 20 is relatively wide. A pair of spindles 2dand 26 extend through the casing, being supported therein for rotationand through the bolt passing through the guideway 22 formed in the bolt.The spindle2el is provided at one end with suitable key-controlled lockmech-.

anism 28 and at the opposite end with a bandie 30, and the spindle 2G isprovided with a handle 32 whereby the spindle may be rotated. Thespindle 24 carries a cam roll 34:, a side elevation of which is shown inFig. 8 and spindle 28 carries a cam roll 36, an elevation of which isshown in Fig. 9. The cam roll 34, carried by the spindle 24, is adaptedin one position, to lock the bolt against movement but in the secondposition it is adapted to permit free slidable movement 01 the boltthereover. The cam roll 36 is connected with the bolt to reciprocate thesame upon rotation of the spindle 26. a

The cam rolls 34 and 36 are positioned within the guideway 20 of thelock bolt to rotate therethrough upon rotation of their respectivespindles. The cam roll 36 has an arm at the outer end of which is a pin38, which pin projects beyond both sides of the arm and the oppositeends of which are engaged within sub-guideways formed in the bolt whichare identified as 40. These subguideways extend transversely oi the boltrom'the guideway 22 through the guideway 20 to one edge of the bolt andpin 38 travels therethrough during the rotation of the cam roll 36 toreciprocate bolt 16.

The cam roll 34 is shown in its normal position in Figs. 1 and 2 and insuch position it is adapted to permit slidable movement of the lock boltthereover. This cam roll34 has a flange 42 formed along its cam face andwhenthe roll is rotated to a position of 180 distant from that showninFigs. 1 and 2, the flanged face 42 engages the shoulders -4 l.forn1edin the slot 20 and prevents retrac lugs 46 formed within the lock bolton opposite sides of gateway as shown in Fig. 5 and these lugs are ofthe shape shown in part in dotted outline in Figs. 1 and 2.

The flanged face 42 rides over the arcuate face of the lug and the lugsserve to assist in positioning the cam roll in place in the guideway 20.It will be noted that the guideway alon one edge of the lock bolt ismore narrow in part thanalong the opposite side and the-cam roll is heldin place therein for rotatable movement therethrough. I

There is a spring 48 which exerts a tension on the lock bolt it beingconnected at one end to a. fixed point on the casing and at the oppositeend to the bolt. This serves normally to exert a tension tending to holdthe bolt in the projected position. a

. .There are apair of substantially parallel spring members 50 whichextend transversely across I the casing on opposite sides of the spindle24 and these serve to exert a pressure thereon tending to hold suchspindle at that Y position to which it has been rotated.

It will be seen that the spindle 26 upon its rotation actuates the boltand the spindle 24 may. berotated to lock the bolt against release. Inthe construction shown the lock is adapted for use as, for example, on agarage door, and a connection would be made with the llIlg. .18 torelease a catch properly located. 1 1 i The lock bolt is provided alongone edge with a projecting shoulder 52 which in one position engages anabutment 54 formed in the casing, as shown in Fig. l and in the see endposition engages an abutment 56 formed in the casing as shown in Fig. 2.

1 'I claim 1. Lockv mechanism including a slidably supported bolt socored out as to have longitudinally perpendicularly intersecting guide-Ways, a rotatably supported spindle extending transversely through oneguideway, said spindle provided with a cam roll slidably rotatablethrough the other guideway, said r011 having an arm provided with a pinengaged Within a sub-guideway extending transversely of the guidewaywithin which the roll is mounted whereby the bolt may be ,reciprocatedthrough rotation of the spindle, a second rotatably supported spindleextending transversely through the first guideway and provided with acam roll slidably rotatable through the same guideway as the firstcamroll, said guideway provided with a ledge adapted to be engaged by saidsecond cam roll inone position of rotation to lock the bolt againstmovement.

2. Lock mechanism including a slidably supported bolt so cored out as tohave longitudinally perpendicularly intersecting guideways, a rotatablysupported spindle extending transverselythrough one guideway, saidspindle provided with a cam roll slidably 7 reciprocated throughrotation of the spindle,

a second rotatably supported spindle extending transversely through thefirst guideway and provided with a cam roll slidably rotatable throughthe same guideway as the first cam roll, said second cam roll having aflanged cam face, saidguideway being of a size on both sides of thespindle to guide said cam roll in its rotation therethrough but cut outupon one side of the spindle to permit rolation of the flanged portionof the roll therethrough, said guideway having a stop adapted to beengaged by the flanged cam face of said roll in one position of itsrotation to prevent movement of the bolt.

3. Lock mechanism including a slidably supported bolt so cored out as tohave 1011 itudinally perpendicularly intersecting guideways a pair ofrotatably supported spindles extending through the bolt at theintersection of the guideways, each spindle provided with a cam rollsupported for rotatable travel through one guideway, one of said camrolls coupled with the bolt to reciprocate the bolt upon rotation of theroll, the other cam roll adapted in one position to permit free slidabletravel of the bolt thereover and in a second position spaced 180 degreesfrom the first position to lock the bolt against slidable travel.

4. Lock mechanism including a slidably supported bolt so cored out as tohave longitudinally perpendicularly intersecting guideways, a pair ofrotatably supported spindles extending through thebolt at theintersection of the guideways, each spindle provided with a cam rollsupported for rotatable travel through one guideway, one of said camrolls having a pin engaged within a sub-guideway formed in and extendingangularly with respect to the first guideway whereby the bolt isreciprocated upon rotation of the cam roll, the other cam roll having a)ortion adapted in one position to lock the lt against reciprocation andin a second position to permit free slidable travel of the boltthereover. 5,. Lock mechanism including a slidably supported bolt socored out as to have longitudinally intersecting guideways extendingentirely therethrough, a pair of spindles extending transversely throughone guideway, each spindle provided with a cam roll supported onopposite sides of the spindle in the other guideway for guidedrevolution therethrough, one cam roll having an arm slidable throughsaid guideway, which arm is provided with a pin engaged within adepression formed in the guideway to reciprocate the bolt uponrevolution of the arm, the other cam roll having a flanged portionrevolvable through said guideway on one side of the spindle but not onthe other and adapted in one position to engage a stop within thegulideway to limit the reciprocation of the 6. Lock mechanism comprisinga case, a lock bolt slidably supported therein, spaced apart stopscarried by the case, a projection on the bolt adapted in one position ofthe bolt to engage one stop and in a second position of the bolt toengage the other stop to limit the reciprocation of the bolt through thecasing, said bolt provided with angularly arranged longitudinalguideways, a pair of parallel spindles extending transversely throughthe bolt through one of said guideways to permit slidable travel of thebolt with respect to the spindles, a cam roll carried by each spindlearranged within the other guideway to permit slidable travel of the boltthereover, one cam roll having a pin engaged with the bolt offset theguideway through which the cam roll travels to travel slidablytransversely the bolt upon rotation of the cam roll to reciprocate thebolt, the other cam roll having a flange adapted in one position of theroll to engage the bolt to prevent its reciprocation and in a secondposition spaced 180 degrees from the first position to permit rotationof the bolt.

In testimony whereof, I, ARTHUR E. THOMAS, sign this specification.

ARTHUR E. THOMAS.

